""Whatever it takes" is said by some to be the maxim that marked the battle of the last year. But, it cannot be an asymmetric mantra, trotted out only during times of deep economic and financial distress, and discarded when the cycle turns. If "whatever it takes" was appropriate to arrest the panic, the refrain might turn out to be equally necessary at a stage during the recovery to ensure the Fed's institutional credibility. The asymmetric application of policy ultimately could cause the innovative policy approaches introduced in the past couple of years to lose their standing as valuable additions in the arsenal of central bankers."

Link to the Speech